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RISS 인기검색어
- 검색키워드
- 저자 : 김선현(S.H. Kim) (검색결과 13 건)
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자동변속기용 부품의 에너지 절감을 위한 최적 설계 연구
김선현(S. H. Kim),김태형(T. H. Kim),이학선(H. S. Lee),홍의창(E. C. Hong),이정환(J. H. Lee) 한국소성가공학회 2014 한국소성가공학회 학술대회 논문집 Vol.2014 No.10
Lots of the industrial world with high energy consumption are trying to reduce energy of manufacturing product. Energy saving is cost reduction. So it is absolutely necessary for profit improvement of selling cost. Turning process after hot forging in vehicle auto transmission part changed to turning after plate cold forging for the energy and cost saving in former research. So it got weight saving of forging part. Heat energy can be reduce from hot forging to plate cold forging and weight saving of forging part got the energy and cost saving as reduction of turning volume. This study suggest a effective way to reduce an input material in cold forging and volume of turning operation. Therefore, this study presents optimum design for energy saving of manufacturing product.
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실험계획법을 이용한 냉간 성형품의 선삭 공정에 대한 가공성 평가
김선현(S. H. Kim),김준현(J. H. Kim),김태형(T. H. Kim),권대은(D. E. Kwon),김윤현(Y. H. Kim),이학선(H. S. Lee) 한국소성가공학회 2013 한국소성가공학회 학술대회 논문집 Vol.2013 No.10
In order to get cost reduction in the turning machining field, manpower and extra expenses are reduced. To get an optimum cutting condition, it highly tends to depend on a lot of tests according to individual field experience. So it is necessary for change of the flexible cutting conditions in industrial site, because the society becomes high technology gradually. This study presents and effective method to get optimum cutting condition using Taguchi method that is most commonly used a design of experimental method. Therefore, this study can get an optimum cutting condition at minimum of test according to make cutting plans through using the minimum design of experiment.
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자동변속기용 고강도 소재의 경제성을 만족하는 최적 선삭 가공 조건 선정
김선현(S. H. Kim),김태형(T. H. Kim),이학선(H. S. Lee),홍의창(E. C. Hong),이정환(J. H. Lee) 한국소성가공학회 2014 한국소성가공학회 학술대회 논문집 Vol.2014 No.10
Most industries are required low manufacturing cost according to high competition recently. To get a low cost, manufacturing cost have to reduce more quickly and efficiently. But to get an optimum cutting condition, it highly tends to depend on a lot of test according to individual field experience. So it is necessary for change of the flexible cutting conditions in industrial site, because the society becomes high technology gradually. This study presents the selection of optimum cutting condition for high strength material used automotive transmission parts in turning and if selected minimum cutting force is satisfied an optimum manufacturing and tooling cost.
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선현,안병희,오봉석,김상형,이동준,Sun, H.,Ahn, B.H.,Oh, B.S.,Kim, S.H.,Lee, D.J. 대한흉부심장혈관외과학회 1992 Journal of Chest Surgery (J Chest Surg) Vol.25 No.12
Ruptured aneurysms of the sinus of Valsalva are relatively rare, and the incidence seems to be higher in oriental than in western countries. Eight patients underwent operative treatment at Chonnam University Hospital from June, 1986 to May, 1992. Six of the patients were male and two female. Age ranged from eight to fifty six years. Associated cardiac lesions were common including AR and VSD in four patients respectively. Diagnosis was made by 2D-Echo and cine-angiogram. In six patients aneurysms of the sinus of valsalva ruptured from the right coronary sinus to the right ventricle and in two from right coronary sinus to the right atrium Direct closure of aneurysmal rupture and patch closure of VSD in four cases, resection of the aneurysm and direct closure in one case, direct closure of the fistula and AVR in two cases, direct closure in one case were performed. One patient combined with VSD, pulmonary hypertention and bacterial endocarditis underwent operation, but he died of sudden cardiac arrest the day after the operation. Operative results were relatively good in the other patients.
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선현,안병희,김상형,정상우,Sun, H.,Ahn, B.H.,Kim, S.H.,Juhng, S.W. 대한흉부심장혈관외과학회 1992 Journal of Chest Surgery (J Chest Surg) Vol.25 No.12
Leiomyoma, one of the primry benign tumors of the lung, is extremely rare. Few cases reported in the literature suggest that this tumor occurs most commoly in the fourth decade and that over 90 percent of the pulmonary parenchymal leiomyomas occur in women and almost all lesions are found incidentally on chest radiographs. Treatment has been conservative surgery and 65 percent of the reported cases have been managed by lobectomy or pneumonectomy for advanced irreversible lung diseases or unw-areness of the benign nature of the lesion. This report is a case of pulmonary parenchymal leiomyoma in a 46-year-old female patient. She underwent surgical resection and the postoperative result was good.
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